Why would his poll numbers go up? Most people already see him as a candidate right now. If anything, his numbers will slip even further than the already have, since his announcement gives evryone another opportunity to talk about his shameless flip flopping and RomneyCare.

Yes, they can all talk more about his six year old flip flop...and then complain about Romneycare and ethanol and all of the other positions he is not flipping on in the face of harsh hysterical criticism - and they will sound totally credible in the process!